Pre-stressed pressure transducer and method of forming same

Details Pre-stressed pressure transducer and method of forming same Pre-stressed pressure transducer and method of forming same

1992-11-06

1994-09-20

Reynolds, Bruce A.

Electricity: electrical systems and devices

Electrostatic capacitors

Variable

73718, H01G 700

Patent

active

053494911

ABSTRACT:
A pre-stressed capacitive pressure transducer is disclosed which is capable of withstanding an applied high pressure. The transducer incorporates a pre-stress mechanism comprising upper and lower pre-stress members which are welded together to apply a compressive force to the transducer sealing means. The compressive force serves to improve the transducer seal resistance to high pressure damage. The pre-stress mechanism may also be adapted to provide additional overpressure protection by bottoming out against the transducer input flange. A method of forming such a pre-stressed transducer is also disclosed. The pre-stress mechanism and method can be easily adapted to meet the requirements of a wide variety of transducers without requiring modification of the transducer internal design parameters.

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